Improved forge



lnted @gettata GEORGE CAMPBELL, OF NORTH BUFFALO, NEW YORK.

Letters Patent No. 100,975, dated March 22, 187 0; antedtetl March 11, 1870.

IMPROVE!) FORGE.

To all 'whom t't may concern.-

Be it known that I, GEORGE CAMPBELL, of North Buffalo, in the county of Erie and State of New York, have inventeda new and improved Forge; and I do hereby declare that the following is. a full, clear', and

exact description thereof', which will4 enable others skilled in the art to make and use the same, reference being had to the accompanying drawings forming part of this specification.

This invention relates to improvements in blacksmiths forges, having for its object' to provide an improved arrangement of means whereby the supportingframe of 'a portable forge maybe readily transferred from the wheels on which it is moved to the ground, and ct'ce versa..

Also, certain improvements in the tweer-irons and A. represents the frame, which is supported on the aile B of small wheels, for moving it from place to pace.

The axles B pass through vertical slots O in brackets D, projecting from the posts Vat each endof the frame.

Above these slots, dogs E, having handles, are pivoted in such a way that when the frame is raised up, to bring the shafts or axles to the bottom of the slots, they will engage the tops of the 'axles and suspend the frame above the ground thereon. To let the frame down to rest on the ground these dogs are disengaged from the axles.

F represents the fire-box, wherein, through the bottom, I make two air-passages, G, leading from an airreceiving chamber, H, below, for two fires.

I represents the tweers, having circular orifices enlarged at the bottom, and resting ou valves, K, s imilar in form to the slide-valves of a steam-engine; through these the blast rises.

The tweers are provided with. valves, L, representing in form asector of a sphere, and pivoted to turning rods M in the angleot the radial lines.

The air-receiver H is provided with valves N, covering the supply-passages O, from the fans P. These valves open inward, and will both be open when both fans are operating, but when only one is working the valve of the other will be closed, so as t'o prevent the escape. of' the air through the fau not operating.

The shape of' thc lire may be changed to a circular The Schedule referred to in these Letters Patent and making part of the same.l

form by adjusting the base of the valves L upward, when the air will pass all around them. When adjusted to the position represented in iig. 2, the fire will take the form of the opening between the vertex of the angle of the valve and the side of the circular orifice through the tweer; and the fire oi this form may be changed to the opposite side of the said orifice by reversing the position of the valve. When the base of the valve is turned downward the orifice will be closed, by the said base fitting at the top ofthe orifice through the sliding valves K, which is intended to be such as to stop the blast.

By means of the sliding valves K, the two fires may be brought toward or from each other, and by moving the slide-valves K, so that the oriees through them will not coincide with the orifices G through the fire-box, the air will strike the under surface of thc said valves, and become thereby considerably heated before contact with the fire. Ihe enlarged recesses in the bottoms of the tweers also tend to increase the temperature of the air. It is also warmed to a considerable extent in the receiver H below.

The tweers rest ou the top of the valves K, and are prevented from changing position on them by the -pins Q rising up from the faces of the said valves;

and, by means of these pins and the rods M, the said valves are moved around on the bottom of the firebox.

. 'lhe moving of the valves and tweers in this way breaks up and facilitates the removal of the eindei and slag.

Both fires may be blown by one fan, which will be suiicient for small work.

For operating the fans, I provide the crank-shafts R, multiplying-wheels T, and large belt-wheels U, which are also balance-wheels, and to the wrist-pins ofl these cranksl connect both hand-levers V and foot-levers W, so arranged that the operator may work with hand and foot at the same time.

Having thus described my invention,

I claim as new and desire to secure by Letters Patent- 1. The combination of the fi'ame A having the slots O', the axles B and 'wheels thereon, and the dogs E, when all arranged substantially as specified.

2. The arrangement with the passages O from two fans, of the receiver H and valves N, vsubstantially as specified.

3. The combination with the perforated dre-box and the tweers I, of the sliding valves K, substantially as specified.

4. The combination with the tweers I, of the valves L, when shaped substantially as specied.

lrEOltGll CAMPBELL.

Witnesses:

,lsnAnL OAKEY, HENRY CAMPBELL. 

